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LMV2421 Datasheet(PDF) 5 Page - Texas Instruments |
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LMV2421 Datasheet(HTML) 5 Page - Texas Instruments |
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5 / 23 page ![]() 5.3 Electrical Characteristics for 2.6V (continued) all limits specified to TJ = 25°C and VDD = 2.6V (unless otherwise noted); boldface limits apply at temperature extremes (1) PARAMETER CONDITION MIN TYP MAX UNITS Logarithmic slope (5) At 900MHz, 20kΩ || 68pF between COMP1 and COMP2 −1.74 µA/dB At 1800MHz, 20kΩ || 68pF between COMP1 and COMP2 −1.62 At 1900MHz, 20kΩ || 68pF between COMP1 and COMP2 −1.60 At 2000MHz, 20kΩ || 68pF between COMP1 and COMP2 −1.59 Logarithmic intercept (5) At 900MHz, 20kΩ || 68pF between COMP1 and COMP2 –50.4 dBm At 1800MHz, 20kΩ || 68pF if between COMP1 and COMP2 –52.3 At 1900MHz, 20kΩ || 68pF between COMP1 and COMP2 –51.9 At 2000MHz, 20kΩ || 68pF between COMP1 and COMP2 –52.3 RIN DC resistance See (3) 55.7 Ω ERROR AMPLIFIER GBW Gain-bandwidth product See (3) 5.1 MHz VO Output swing from rail From positive rail, sourcing, IO = 7mA 47 90 115 mV From negative rail sinking, IO = −7mA 52 90 115 IO Output short-circuit current (6) Sourcing, VO = 2.4V 10 29.5 mA Sinking, VO = 0.2V 10 27.1 en Output-referred noise fMEASURE = 10kHz, RF input = 1800MHz, –10dBm, 20kΩ || 68pF between COMP1 and COMP2, VOUT =1.4V, set by VRAMP (3) 700 nV/√Hz SR Slew rate 2.1 4.4 V/μs (1) Electrical table values apply only for factory testing conditions at the temperature indicated. Factory testing conditions result in very limited self-heating of the device such that TJ = TA. No specification of parametric performance is indicated in the electrical tables under conditions of internal self-heating where TJ > TA. (2) All limits are specified by design or statistical analysis. (3) Typical values represent the most likely parametric norm. (4) Power in dBV = dBm + 13 when the impedance is 50Ω. (5) Slope and intercept calculated from graphs VOUT vs RF input power where the current is obtained by division of the voltage by 20kΩ. (6) The output is not short-circuit protected internally. External protection is necessary to prevent overheating and destruction or adverse reliability. 5.4 Electrical Characteristics for 5V all limits specified to TJ = 25°C and VDD = 5V (unless otherwise noted); boldface limits apply at temperature extremes (1). SYMBOL PARAMETER CONDITION MIN TYP MAX UNITS IDD Supply current VOUT = (VDD – GND) / 2 7.8 12 15 mA In Shutdown (TX_EN = 0V) VOUT = (VDD – GND) / 2 0.4 30 µA VHIGH Logic level to enable power See (2) 1.8 V VLOW Logic level to disable power See (2) 0.8 V TON Turn-on-time from shutdown 1.5 6 μs IEN, IBS Current into TX_EN and BS pin 0.03 5 µA RAMP AMPLIFIER VRD VRAMP deadband 155 206 265 mV 1/RRAMP Transconductance See (3) 70 96 120 µA/V www.ti.com LMV242, LMV2421 SNWS014D – MARCH 2004 – REVISED JUNE 2025 Copyright © 2025 Texas Instruments Incorporated Submit Document Feedback 5 Product Folder Links: LMV242 LMV2421 |
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